[AP1153ADSXX] 015000869-E-00 - 1 - 2015/01 1. General Description The AP1153ADSXX is a low dropout linear regulator with ON/OFF control, which can supply 100mA load current. The IC is an integrated circuit with a silicon monolithic bipolar structure. The output voltage, trimmed with high accuracy, is available from 1.3 to 5.0V in 0.1V steps. The output capacitor is available to use a small 0.22μF ceramic capacitor. The over current, thermal and reverse bias protections are integrated, and also the package is small and thin type. The IC is designed for space saving requirements. 2. Feature Available to use a small 0.22μF ceramic capacitor Dropout Voltage V DROP =160mV at 100mA Output Current 100mA High Precision output voltage 1.5% or 50mV High ripple rejection ratio 80dB at 1kHz 70dB at 10kHz Wide operating voltage range 2.1V to 14.0V Very low quiescent current I QUT =75A at I OUT =0mA On/Off control (High active) Built-in Short circuit protection, thermal shutdown Built-in reverse bias over current protection Available very low noise application Very small surface mount package SOT23-5 3. Application Automotive accessory equipment Any Electronic Equipment Battery Powered Systems Mobile Communication AP1153ADSXX 14V Input / 100mA Output LDO Regulator
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[AP1153ADSXX]
015000869-E-00 - 1 - 2015/01
1. General Description
The AP1153ADSXX is a low dropout linear regulator with ON/OFF control, which can supply 100mA load
current. The IC is an integrated circuit with a silicon monolithic bipolar structure. The output voltage, trimmed
with high accuracy, is available from 1.3 to 5.0V in 0.1V steps. The output capacitor is available to use a small
0.22μF ceramic capacitor. The over current, thermal and reverse bias protections are integrated, and also the
package is small and thin type. The IC is designed for space saving requirements.
2. Feature
Available to use a small 0.22μF ceramic capacitor
Dropout Voltage VDROP=160mV at 100mA
Output Current 100mA
High Precision output voltage 1.5% or 50mV
High ripple rejection ratio 80dB at 1kHz
70dB at 10kHz
Wide operating voltage range 2.1V to 14.0V
Very low quiescent current IQUT=75A at IOUT=0mA
On/Off control (High active)
Built-in Short circuit protection, thermal shutdown
Built-in reverse bias over current protection
Available very low noise application
Very small surface mount package SOT23-5
3. Application
Automotive accessory equipment
Any Electronic Equipment
Battery Powered Systems
Mobile Communication
AP1153ADSXX
14V Input / 100mA Output LDO Regulator
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4. Table of Contents
1. General Description ........................................................................................................................................... 1
6. Ordering Information ......................................................................................................................................... 4
7. Pin Configurations and Functions ...................................................................................................................... 5
11.1 DC Characteristics .................................................................................................................................... 11
11.2 Temperature Characteristics ..................................................................................................................... 14
11.6 Line transient ............................................................................................................................................ 19
11.9 Operating Region and Power Dissipation ................................................................................................ 23
11.10 ON/OFF Control ................................................................................................................................... 24
11.12 The notes of the evaluation when output terminal is short-circuit to GND .......................................... 25
12. Definition of term............................................................................................................................................. 26
15. Revise History .................................................................................................................................................. 29
IMPORTANT NOTICE .......................................................................................................................................... 30
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5. Block Diagram
BandgapReference
Over Heat &Over Current
Protection
Vin
Vcont
Vout
NpGND
500kΩ
ControlCircuit
320kΩ
Figure 1. Block Diagram
VIN VOUT
VCONT GND NP
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6. Ordering Information
AP1153ADSXX Ta = -40 to 85°C SOT23-5
・ Output Voltage Code
For product name, please check the below chart. Please contact your authorized ASAHI KASEI
MICRODEVICES representative for voltage availability.
AP1153ADSXX
Table 1. Standard Voltage Version, Output Voltage & Voltage Code
XX VOUT XX VOUT XX VOUT
18 1.8 28 2.8 33 3.3
21 2.1 30 3.0 50 5.0
Table 2. Optional Voltage Version, Output Voltage & Voltage Code
Please derate 5.4mW/°C at Pd=677mW above 25°C. Thermal resistance (θJA) is 185°C/W.
Method of obtaining Pd easily
Connect output terminal to GND (short circuited), and measure the input current by increasing the input voltage
gradually up to 10V. The input current will reach the maximum output current, but will decrease soon according to
the chip temperature rising, and will finally enter the state of thermal equilibrium (natural air cooling).
The input current and the input voltage of this state will be used to calculate the Pd.
Pd(mW) ≈ Vin (V) × Iin (mA)
When the device is mounted, mostly achieve: 500mW or more
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25 50 100
Pd(mW)
140C
Pd
00
75C
Ta(°C)
2
3
4
D Pd5
Procedure (When mounted on PCB).
1.Find Pd (Vin × Iin when the output is short-circuited).
2. Plot Pd against 25°C.
3. Connect Pd to the point corresponding to the 140°C with
a straight line.
4. Pull a vertical line from the maximum operating
temperature in your design (e.g., 75°C).
5. Read the value of Pd against the point at which the
vertical line intersects the derating curve(DPd).
6.DPd / (Vinmax-Vout) = Iout (at 75°C)
The maximum output current at the highest operating temperature will be Iout ≈ DPd / (Vinmax-Vout).
Please use the device at low temperature with better radiation. The lower temperature provides better quality.
11.10 ON/OFF Control
It is recommended to turn the regulator off when the circuit following the regulator is not operating. A design with
small electric power loss can be implemented.
Because the control current is small, it is possible to control it directly by CMOS logic.
Control Terminal Voltage (Vcont) ON/OFF State
Vcont > 1.8V ON
Vcont < 0.35V OFF
Parallel Connected ON/OFF Control
Figure 6. Parallel Connection Example
Figure 6 shows the multiple regulators being controlled by a single ON/OFF control signal. There is fear of
overheating, because the power loss of the low voltage side (AP1153ADS20) is large. The series resistor (R) is put
in the input line of the low output voltage regulator in order to prevent over-dissipation. The voltage dropped across
the resistor reduces the large input-to-output voltage across the regulator, reducing the power dissipation in the
device. When the thermal sensor works, a decrease of the output voltage, oscillation, etc. may be observed.
2.0V
5V
3.3V
On/Off Cont.
VIN AP1153ADS50
R
Vout
AP1153ADS33
AP1153ADS20
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11.11 Noise Bypass
The noise characteristics depend on the capacitance on the Np terminal. A standard value is Cnp=0.001μF. Increase
Cnp in a design with important output noise requirements. The IC will not be damaged even the capacitor value is
increased. The on/off switching speed changes depending on the Np terminal capacitance. The switching speed
slows when the capacitance is large.
11.12 The notes of the evaluation when output terminal is short-circuit to GND
By the resonance phenomenon by Cout (C ingredient) and the short circuit line (L ingredient), which are attached to
an output terminal, an output terminal changes with minus potential. In order that Parasitism Tr arises within the IC,
and a latch rise phenomenon may occur within IC when the worst if it goes into an output terminal's minus side, it
results in damage by fire (white smoke) and breakage of a package. (f0 = 1 / 2π√ (L C))
The above-mentioned resonance phenomenon appears notably in a ceramic capacitor with the small ESR value, etc.
A resonance phenomenon can be reduced by connecting resistance (around 2ohms or more) in series with a short
circuit line. Thereby, the latch rise phenomenon within IC can be prevented.
Generally, when using tantalum or large electrolysis capacitor, the influence of resonance phenomenon can be
reduced due to the large ESR (2ohms or more).
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12. Definition of term
Relating Characteristic
Note Each characteristics will be measured in a short period not to be influenced by joint temperature (Tj).
•Output voltage (Vout)
The output voltage is specified with Vin= VoutTYP+1V and Iout=5mA
•Output current (Iout)
Output current, which can be used continuously (It is the range where overheating protection of the IC does not
operate.)
•Peak maximum output current (IoutPEAK)
The rated output current is specified under the condition where the output voltage drops 90% by increasing the
output current, compared to the value specified at Vin=VoutTYP+1V.
•Dropout voltage (Vdrop)
It is an I/O voltage difference when the circuit stops the stable operation by decreasing the input voltage.It is
measured when the output voltage drops 100mV from its nominal value by decreasing the input voltage
gradually.
•Line Regulation (LinReg)
It is the fluctuations of the output voltage value when the input voltage is changed.
•Load Regulation (LoaReg)
It is the fluctuations of the output voltage value when the input voltage is assumed to be VoutTYP +1V, and the
load current is changed.
•Ripple Rejection (R.R)
Ripple rejection is the ability of the regulator to attenuate the ripple content of the input voltage at the output. It
is measured with the condition of Vin=Vout+1.5V. Ripple rejection is the ratio of the ripple content between
the output vs input and is expressed in dB.
•Standby current (Istandby)
It is an input current, which flows to the control terminal, when the IC is turned off.
Relating Protection Circuit
•Over Current Protection
It is a function to protect the IC by limiting the output current when excessive current flows to IC, such as the
output is connected to GND, etc.
•Thermal Protection
It protects the IC not to exceed the permissible power consumption of the package in case of large power loss
inside the regulator. The output is turned off when
temperature of the chip decreases.
•Reverse Voltage Protection
Reverse voltage protection prevents damage due to the output voltage being higher than the input voltage. This
fault condition can occur when the output capacitor remains charged and the input is reduced to zero, or when an
external voltage higher than the input voltage is applied to the output side. Generally, a LDO regulator has a
diode in the input direction from an output. If an input falls from an output in an input-GND short circuit etc. and
this diode turns on, current will flow for an input terminal from an output terminal. In the case of excessive
current, IC may break. In order to prevent this, it is necessary to connect a Schottky Diode etc. outside. This
product is equipped with reverse bias over-current prevention, and excessive current does not flow in to IC.
Therefore, no need to connect diode outside.
Vin Vout
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13. Recommended External Circuits
■External Circuit
Figure 7. External Circuit
■Test Circuit
Vin
Icont
Vcont
Iin
Cin Iout Vout
1.0F 1.0F
0.001F
A
V
A
++
1 32
5 4
Vin Vout
NpGNDVcont
CL
Cnp
Figure 8. Test Circuit
CL=0.22μF (CL=1.0μF)
Vcont
Cin=0.1μF
Cnp=0.1μF
VIN
VCONT
VIN VOUT
GND NP
To load
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14. Package
■ Outline Dimensions Unit: mm
2.9
1.6
1.1
0.1
25
0.4
2.80 ~
0.1
50
.1
0.2
5 4
1 3
+0.1
0
0.0
5
0.4 0.2
+
+
+
0.95 0.95
R33
Mark
Lot No.
xxx
0.1+
+0.2
0.1
+0.20.3
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15. Revise History
Date
(YY/MM/DD)
Revision Page Contents
15/01/21 00 - First edition
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IMPORTANT NOTICE
0. Asahi Kasei Microdevices Corporation (“AKM”) reserves the right to make changes to the information contained in this document without notice. When you consider any use or application of AKM product stipulated in this document (“Product”), please make inquiries the sales office of AKM or authorized distributors as to current status of the Products.
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2. The Product is neither intended nor warranted for use in equipment or systems that require extraordinarily high levels of quality and/or reliability and/or a malfunction or failure of which may cause loss of human life, bodily injury, serious property damage or serious public impact, including but not limited to, equipment used in nuclear facilities, equipment used in the aerospace industry, medical equipment, equipment used for automobiles, trains, ships and other transportation, traffic signaling equipment, equipment used to control combustions or explosions, safety devices, elevators and escalators, devices related to electric power, and equipment used in finance-related fields. Do not use Product for the above use unless specifically agreed by AKM in writing.
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